diff --git a/src/tiled_yuv.S b/src/tiled_yuv.S
index c6fa833..779801a 100644
--- a/src/tiled_yuv.S
+++ b/src/tiled_yuv.S
@@ -182,4 +182,19 @@ thumb_function tiled_deinterleave_to_planar
 	b	7b
 end_function tiled_deinterleave_to_planar
 
+#else /* __aarch64__ */
+
+/* Fourier-local: aarch64 stub. The body of this file is ARMv7 NEON Thumb
+ * assembly used by sunxi-cedrus (Allwinner-tiled NV12 → linear NV12) and
+ * is never reached on aarch64 hosts because video_format_is_linear()
+ * returns true for our NV12 entries. Provide a stub so the shared object
+ * still resolves the symbol; if ever actually called, return immediately. */
+.text
+.global tiled_to_planar
+.type tiled_to_planar, %function
+.hidden tiled_to_planar
+tiled_to_planar:
+	ret
+.size tiled_to_planar, .-tiled_to_planar
+
 #endif